Composition for absorbing and purifying the waste products of combustion



Patented Feb. 16, 1926.

JOHN C. TATE, OF OAKLAND, CALIFORNIA.

COMPOSITION FOR ABSORBING AND PUBIFYING THE WASTE PRODUCTS OFCOMBUSTION.

No Drawing.

To all 'wlwin it may concern:

Be it known that 1, JOHN C. TATE, a citizen of the United States, and aresident'of the city of Oakland, county of Alameda, State of California,have made a new and useful inventionto wit, Improvements in Compositionfor Absorblng and Purifying thelVaste Products of Combustion; and I dohereby declare the following to be a full, clear, concise, and exactdescription of the same.

This invention relates particularly to an absorbent composition orsubstance, consisting particularly of the combination of a mineralmatter, or a mineral substance and a binder, or a combination of saidsubstances which will absorb, wholly or in part the toxic parts ofv'itiated air or the injurious and objectionable waste gaseous productsresulting from the combustion of vegetable or animal matter, orhydrocarbon oils or gases.

A further object of the invention is to provide a composition capable ofretaining, absorbing and neutralizing moisture, gases and thedisagreeable and injurious odors resulting from the combustion ofanimal, mineral and vegetable matter, permitting the combustion of suchmatter in heating devices within restricted areas so as to, or not,require outlets, flues, or ventilation, usually necessary -to theconventional type of oil or gas heater for carrying off the wasteproducts of combustion. Other objects and advantages will appear as thisdescription progresses.

In this specification, the invention is de-' scribed in the formconsidered to be the best, but it is to be understood that the inventionis not limited to such form because it may be embodied in other forms;and it is also to be understood that in and by the claims followin thedescription, it is desired to cover the invention in whatsoever form itmay be embodied.

The burning and combustion of hydrocarbon gases for heating andlighting, articularly the coal or water gas use in homes forilluminating and heating purposes, leaves residium exhaust gases whichcontain objectionable byproducts unhealthful for human inhalation, andproduce disagreeable odors, create moisture and tend to deface or attackmetallic and painted surfaces and organic materials.

My invention contemplates an absorbent Application filed November 16,1922. Serial No. 601,894.

composition adapted to be contained within a suitable closure and tohave the noxious exhaust gases (resulting from the combustion ofhydrocarbons) to be passed through and in contact with such composition.Carbon dioxide, sulphur gases, water vapor and the like, contained inthe said exhaust gases, will thereby be absorbed, purified, orneutralized, each action resulting 'in the creation and liberation ofoxygen and the regeneration and purification of said exhaust gases intoclean and wholesome air.

In the practical operation of my invention, a heater or stove, utilizinghydrocarbon gases for combustion purposes, would have a container, orretort mounted thereon and filled with lumps or particles of myabsorbent composition. The exhaust gases from said burner would bepassed through the container, intoand with contact with the absorbentcomposition, and then discharged into the air. I have found by directingthe course of the heated gases throu h the absorbent composition, priorto releasing it into the atmosphere, that the greater part of the toxicconstituents of the exhaust gases are absorbed, purified, .orneutralized, so that the heated air is released free of all noxiousgaseous products and made fit for breathing purposes.

The regeneration, or purification of the heated gases, in this manner,eliminates the necessity of air vents to the said stove, and makes itpossible to do with gas heaters what has been commonly done with otherheating appliances that do not generate objectionable gaseous products.The porous nature of the absorbent composition is such that it holds orretains the waste gaseous products, and repeated experiments have shownthat the absorbent composition is materially heavier after usage of acouple of months than when first placed in use, making it necessary torenew the composition only when saturated beyond a point of eiiicientabsorption.

The composition is preferably formed of either a mineral absorbent, suchas airslaked lime, burned gypsum, kaolin or clay. The mineral absorbent(lime) may be used either separately or mixed with a mineral binder andfiller such as burned gypsum.

A small quantity of clay or kaolin may be mixed directly with lime orincluded as an ditional e emen in comb nat n h he lime and burnedgypsum. Likewise, the mineral lime might be mixed directly with avegetable material such as either wood charcoal, or with driedcorncobs.ments would be mixed in the following proportions, although it is to beunderstood that variations in the quantities of said elements clearlycome withm the purview of this invention: lime, fourteen (14) toeighteen (18) parts; burned gypsum, three (3) to five (5) parts; andkaolin, two (2) to six (6) parts. The said approximate proportions wouldbe adhered to when'the ingredients would be used either separately ormixed in any of the combinations previously set forth.

The elements or ingredients would be preferably mixed in a dry powderedcondition. to which water in a suitable quantity would be added to forma workable semi-solid mass. The masswould then be shaped or divided intounits of any predetermined size and suitably dried. After being dried,the units are hard and porous. The lime of the composition, which formsthe greatest part thereof, acts as a-retainer or absorber of water,

vapor and of the carbon dioxide and sulphur gases. The kaolin or clayacts in a similar manner and incidentally may be so treated as to act asa deodorant. The burned The elegypsum when used, acts as a binder orfiller for holding all of the elements together and,

furthermore, is porous and acts as a me.-

chanical absorbent.

Having thus described this invention,

what I claim and desire to secure by Letters Patent is:

1. A composition lacking a moisture content for purifying wastegaseousproducts of combustion comprising solely a hard porous mass consistingof a mixture of lime capable of absorbing and retaining moisture, gasesand the disagreeable odors resulting from the combustion of animal and,vege table matter, in combination with burned gypsum for holding thelime.

2. A composition lacking a moisture 'content for purifying the wastegaseous products of combustion comprising from filmteen (14) to eighteen(18) parts by weight of lime and three (3) to five (5) parts by weightof burned gypsum capable of absorbing and retaining moisture, ases, andthe disagreeable odors resulting rom the combustion of animal andvegetable matter.

In testimony whereof, I have hereunto set my hand at San Francisco,California, this 3rd day of November 1922.

' I JOHN C. TATE.

